Hidden within this mass of grey and black is an image. Focus on the picture, cross your eyes or stare at the image and attempt to de-focus and see if something appears before you.
It’s more likely that you won’t actually see what’s hidden within this static, and yet your brain may perceive all kinds of shapes and creatures. Attempting to mess with your vision by squinting or crossing your eyes – if you can – should force your brain to see things in a very different way. What did you uncover in the darkness?